Hingeless receptacle cover



Nov. 16 1926. 1,601,469

G. A. LINDSTEDT HINGELESS RE EPTACLE COVER Filed Oct. 7, 19 4 mmnnmm m r iiliiiliiliiiliilialillki VIA Nov. l6, i935.

UNIT

GUSTAV A. LIHDSTEDZ, OF STGCKHOLM, SWEDEN, ASSIGNOB TO LINDSTEDT & HAM- ].EAR, AKTIEBOLAG, OF

STOCKHOLM, SWEDEN.

'HINGELESS REGEETAGLE COVER.

This invention relates to improvements in hingeless receptacle covers, having for an object to provide a receptacle cover utilizing a. novel form of fulcrum member whereby to permit of free swinging movement of the cover with relation to the receptacle in a single plane, thus ensuring positioning of said cover throughout its path of movement with respect to the receptacle so as to align with said receptacle and thereby provide for the covers full and positive engagement over the receptacle, as when the same is moved from an opened or partially opened position to a closed position.

It is likewise an object of the invention to provide a hingeless cover having a fulcrum memer which, with swinging movement of the cover, will have that bearing engagement with adjacent portions of the r ceptacle offering the least possible frictional resistance, hence, minimizing wear upon those portions of the receptacle contacting with said fulcrum member.

Another and equally important object of the invention is to provide a receptacle cover d with soaced' marginal means which, during swinging movement of the cover, will constantly remain in contact with portions of the opposite receptacle walls, thus fimctioning in combination with the fulcrum member to limit the swinging movem nt of said cover in a single vertical plane with respect to the receptacle to render positive its full engagement therewith.

Yet another object of the invention is to provide the cover with spring means for horinally placing the same under a tension such as to nience its return to closed position upon the receptacle, such means coacting with the fulcrum member and the spaced marginal means to limit swinging movement of the cover in, a single vertical plane with relation to the receptacle.

@the" ob ects of the invention will be in part obvious, inafter. v

In order that the invention and its mode of operation may be readily understood by persons skilled in the art, 1 have in the accompanying illustrative drawings, and in the detailed following description ba ed as. is,

thereupon, set out several possible embodiments of the same.

and in part pointed out here In these drawings Figure 1 is a vertical section through a hingeless oil cup constructed in accordance with the invention;

Figure 2 is an enlarged fragmentary detail in section therethrough showing the cover in its opened position upon the receptacle;

Figure 3 is a similar view of a slightly modified form of cover;

Figure 4 is a fragmentary detail-in section showing yet another modified formof cover and fulcrum member;

Figure 5 is a top plan view of the cover having a port-ion thereof broken away to show the formation of the basal portion of that type of fulcrum member disclosed in the Figures 1, 2 and 3;

Figure 6 is a fragmentary detail in top plan view showing the cover in its opened position;

Figure 7 is a fragmentary detail, partly in section, showing a modified form of connection as between the spring means within the receptacle and the cover; and,

Figure 8 is a fragmentary detail, partly in section, showing another modified form of fulcrum member.

Having more particular reference to the drawings, in connection with which like characters of reference will designate corresponding parts throughout, the improved hingless cover is especially adapted for use in connection with that form of receptacle generally indicated in the drawings by the numeral 1, it being the purpose of said receptacle to retain and distribute lubricant to certain bearing surfaces. The inner end portion of the receptacle is reduced, as indicated at 2, while the bottom thereof is formed with an opening 3 through which lubricant dispensed therefrom is-adapted to pass.- The outer marginal portions of the receptacle 1 are bevelled, as indicated by the numeral l, the purpose of which will be sub sequently apparent.

The cover 5 of the receptacle 1 is formed with a marginally disposed skirting flange 6, thus constituting an effectual cap closure for the open outer end of the receptacle 1; it being noted in this connection that the'skirting flange 6 is diagonally formed and is adapted to have the inner sides thereof fiushly engaged with the bevelled outer marginal portion of said receptacle 1, whereby to provide a close and positive fit as between the receptacle 1 and the cover 5, as well as to permit of free swinging movement of the closure 5 including the diagonally disposed marginal skirting flange 6 to and from its engagement with the open outer end of said receptacle.

Oppositely disposed downwardly extended ears are formed upon the rearward portion of the skirting flange 6, as shown in the Figures 1 and :2, and are normally engaged with the adjacent portions of the side walls of the receptacle 1. The forward portion of the closure 5 is provided with a laterally extending lip or visor-like extension 7, such lip, obviously, being struck from a portion of the forward side of the skirting flange 4:. In this way, an effectual finger engaging piece is provided the cover 5 whereby to facilitate its movement to open position.

In order that the closure 5 will be provided with means to facilitate swinging movement of the same towards and from the open outer end of the receptacle 1, l secure to the under side of said closure 5, preferably in proximity to the rearward portion thereof and directly between the down wardly extended ears 6, a fulcruming mem ber 8, said fulcruming member being provided with a basal portion 9 disposed longitudinally of the under side of the closure 5 and connected thereto by suitable process, such as welding, et cetera, while the ful cruming member per se consists of a shank portion depending from the basal portion 9 and curved inwardly upon itself, as is clearly shown in the Figures 1, 2 and 3; the inner or free end of said fulcrum member being formed with a hooked linger 10 whereby to permit of connection of the upwardly disposed U-shaped or looped free end of a contractile coiled spring 11 therewith, said upwardly or longitudinally disposed end of the spring, being indicatechfor the purpose of convenience herein, by the numeral 12. The inner or opposite end of the contractile coiled spring 11, as shown in the Figure 1, is engaged in a hooked finger 18 formed integral or otherwise connected to the inner side of the bottom of the receptacle 1. lhus, it will be understood that the contractile coiled spring 11 will normally exert an inward or downward pull upon the closure cap 5 and under this influence, said closure will be normally retained in full engaged or closed position over the open outer end of the receptacle 1, as shown in the Figure 1. In this connection, it be noted that the diameter of the contractile coiled spring 11 is such as to permit of its snug reception in the reduced inner portion 2 of the receptacle 1 and in consequence, its placement therein will in no way interfere with the discharge of lubricant from such receptacle onto the over the adjacent marginal portion of the outer end of said receptacle 1 and with continued swinging movement of the closure 5, assuming that position as shown in the Figure 2, whereat the further swinging movement of said closure or cover will be prevented by engagement of the adjacent marginal portion of the skirting flange 6 with the adjacent portion of the side wall of the receptacle 1.

Due to the curvature of the shank of the ulcruming member 8, it will be understood that with its passage or movement over the ad acent marginal portion of the outer end of the receptacle 1, minimum frictional resistance will be offered, and in consequence, the wear upon the contacting surfaces of the receptacle 1 will be minimized and likewise, only the least possible pressure need be exerted upon the forward portion of the closure or cover 5 at or in proximity to the finger piece or lip 7 formed on the skirting flange 6. Furtl ermore, because of the curvature of the shank of the fulcruming member 8, which corresponds to the degree of curvature of the arcuate path of movement of the swingable cover 5, it will be seen that the hooked inner end 10 thereof will move, during swinging movement of said cover 5, in but a single plane longitudinally of the receptacle 1, and hence, a. direct pull will be imparted to the contractile coiled spring 11 through the Ushaped free end portion 12 thereof. Because of this arrangement, it follows that binding of any portion of the spring or of the fulcruming member upon ad acent portions of the receptacle 1 will be absolutely avoided and furthermore, wear upon said parts will be reduced to minimum.

The bevelling of the outer portions of the receptacle 1, as hereinbefore indicated by the numeral 4, manifestly, permits of free swinging movement of the closure or cover 5 and its diagonally disposed marginal skirting flange 6 into or out of engagement with said outer end of the receptacle 1 and also, ensures of positive contact as between the closure and said; receptacle.

The mode of engagement of the closure or cover 5 over the open outer end of the receptacle 1 may, of course, vary and as showing one of the many possible embodiments in this connection. a modified formof the cover is illustrated in the Figure 3, wherein the cover 5 is provided with a substantially right-angularly disposed skirting flange 14;

a portion of such flange adjacent its jointure with the cover 5 bemg annularly depressed whereby to provide a circular seat 15, corresponding in diameter to the diameter of the open outer end of the receptacle 1 and adapted to be engaged with the marginal portion of said. open outer end of the receptacle 1, as is clearly shown. A finger engaging piece or laterally extending lip 7' is preferably formed upon the forward portion of the skirting flange 1 1, while oppositely d1 sposed downwardly extending ears 6 are formed upon the rearward portions of the skirting flange 1 1 and are adapted to embrace po1= tions of the side walls of the receptacle 1 in a manner similar to the engagement of the downwardly extending ears 6' with the adjacent portions of the walls of their particular receptacle 1. Also, a fulcruming member 8', corresponding to the fulc'ruining member 8, is provided this closure or cover 5 and is arranged upon the under side of said cover directly between the downwardly extending ears 6 As with the form of closure or cover employed, so may the fulcruining member vary in certain instances, and as showing one possible form of modification of the fulcruming member, attention is invited to the constru tion shown in the Figure 4, wherein the re ceptacle 1 is provided with a closure 5 having a marginally disposed skirting flange 6 corresponding in formation to the flange 14: in the Figure 3. Formed integral with the inner side of the cover 5 is a 'fulcruming shank 16, said shank being disposed at substantially right angles with respect to the inner side of the cover 5 and having one side thereof formed with a curved bearing surface 17 adapted, with swinging movement of the cover 5 upon the receptacle 1 to engage with and ride over the adjacent marginal portion of the open outer end of the receptacle 1 whereby to facilitate such swinging movement of the cover and furthermore, to minimize frictional. resistance upon the contacting marginal portion of said open outer end of the receptacle 1.

This fulcruming member 16 is of a width such as to permit its snug reception within the curved rearward portion of the open outer end of the receptacle 1 and carries upon the free end thereof oppositely disposed laterally extended bearingfingers 18, adapted, during fulcruming of the. member 16, to engage with adjacent portions of the inner side of the receptacle 1 and to facilitate such swinging movement of the cover 5 in a single vertical plane with respect to the receptacle.

An opening is formed in the intermediate portion of the free end of the fulcruming member 16 and receives the hooked upwardly disposed end 19 of the longitudinally 'bent portion or shank 20 of'a contractile coiled spring arranged within and suitably anchored with respect to the receptacle 1' (not shown). Thus, it will be appreciated that with swinging movement of the cover 5" from the open outer end of the receptacle 1, the curved bearing surface 17 of said fulcruming member 16 will be engaged with and caused to ride over an adjacent marginal portion of the open outer end of the receptacle 1 until a portion of the skirting flange 6" of said cover abuts an adjacent portion of one side wall of the receptacle, as clearly shown in the Figure 4, whereupon the fulcruming member 16 will have assumed that position as clearly shown in said Figure 1 with respect to the edge of the open end of the receptacle. During such swinging movement of the cover, the contractile coiled spring from which the shank 20 is extended will be tensioned, and

portion of the shank 20 with a portion'of the receptacle side walls being prevented W by reason of the width of the fulcruming member and the contact of the bearing fingers 18 at spaced points upon the inner sides of the side walls of the receptacle 1 as is clearly shown in'the Figure 6. By reason of this peculiar connection of the shank portion 20 of the coiled spring arranged in the receptacle 1 with the fulcruming member 16, interference with opening of the cover 5 will be absolutely "prevented and when such cover has been moved to its full opened position whereat it will be at substantially right angles with respect to the open outer end of the receptacle 1 as is also shown in said Figure 6, but minimum pressure uponthe finger engaging piece or laterally extended lip 7 thereof will be required to retain it thereat. However, with release of the finger engaging piece or lip 7, the influence of the tensioned. spring within the receptacle 1 upon the fulcrum ing member through the shank portion 20 will be such as to immediately and fully return the cover 5 to closed position over the open outer end of such receptacle. Also, it is to be appreciated that by reason of the spaced engagement of the bearing fingers 18 with the inner sides or faces of the walls of'the receptacle 1 swinging movement of the cover 5 in a single plane with respect to the receptacle will be materially facilitated.

In the Figure 7, there is disclosed a modified form of connection as between the cover fulcruming member and the contractile coiled spring arranged within the receptacle 1. Herein, the cover 5 is provided with a skirting flange, marginally disposed, indicated by the numeral 6, adapted to over lappingly engage with the outer marginal portions of the open lubricant receiving end of said receptacle 1. A fulcruming mem ber 21 is secured to the rearward portion of the under side of the cover 5 being curved upon itself, as; are the fulcruming members 8 and 8, or being formed with a curved bearing surface as with the fulcruming member 16. This fulcruming member 21 is extended at substantially right angles with respect to the cover 5" and is of a width such as will permit its snug reception within the receptacle 1 as between the opposite sides of the rearward portion thereof and carries upon its free end pocketed extensions 22 adapted to movably receive therein the right angularly disposed extremities of hooked fingers 23 formed upon the opposite ends of a substantially U-shaped yoke member 21, whose basal portion is provided with an intermediately disposed loop 25 adapted to have connection with the shank 26 of a contrac tile coiled spring (not shown) arranged within and suitably anchored to the receptacle 1 At this point, it is to be noted thatthe width of the U-shaped yoke 24 approximately corresponds to the inside diameter of the receptacle 1, as is clearly shown in the Figure, 7, while the hooked fingers 23 formed thereupon, with arrangement of the cover 5 in its open position. will extend or overlap the adjacent marginal portions of the open end of such receptacle 1". In consequence, with this overlapping engagement of the fingers 23 as respects the marginal portions of the open end of the receptacle 1 it will be understood that the yoke 24: will serve to temporarily retain the swingable cover 5 in its open position. However, by compressing the opposite sides of the yoke 24L, the right angularly extended fingers of the portions 23 will be caused to move into the pockets of their respective extensions on the free end of the fulcruming member 21 and in so doing, will permit downward movement of the yoke 2 into the receptacle 1 together with downward or closing swinging movement of the closure or cover 5 under influence of the coiled spring from which the shank 26 is extended.

A slightly modified form of fulcruming member, together with means for temporarily retaining a cover provided therewith, is shown in the Figure 8, wherein, the cover 5 is provided with a right angularly disposed fulcruming member 27 having opposed pockets formed in the opposite sides of the free end thereof adapted to snugly receive floating bearing pins 28 therein.v Expansible coiled springs or similar means 29 are arrangeo within the pockets in the opposite sides of the free end of the fulcruming r. ember 27 and have engagement with the adjacent inner ends of said floating bearing pins 28. Therefore, it will be understood that the bearing pins or fingers will be normally distended under the influence of the springs 29 and to limit their outward movement with respect to the opposite sides of said fulcrumingmember, stop pins 30 are lied upon the inner extremities of said nesting bearing pins 28 and are engaged through slots 31 formed in adjacent portions of the fulcruming member 2"? as is clearly shown in the Figure 8. Thus, while the stop fingers 30 are engaged in the outer extremities of their respective slots 31, the floating bearing pins 28 will be'prevented from. having any further outward movemeet, it is obvious that inward movement of said pins 28 againstthe coiled springs 29 will be permitted.

During outward swinging movement of the cover 5 from the receptacle 1 provided therewith, it will be understood that the floating bearing pins 28 will 'have'contact with portions of the inner sides of the side walls of the receptacle 1 at spaced points, and in consequence, will facilitate such swinging movement of the cover 5 in a vertical plane with respect'to the receptacle 1. When, however, the cover 5 has been swung or moved to its full open position with respect to the receptacle 1", the free end of the fulcruming member 27 will have bee arranged in a plane beyond the marginal portions of the open free end of the receptacle 1 and in consequence, they will immediately move under influence of the expausible coiled springs 29 to their outermost positions with respect to the opposite sides of said fulcruming member 27, hence, engaging over adjacent marginal portions of the open end of the receptacle 1 and serving to effectually, yet releasably, retain the cover 5 in its full open position. To close the cover, it is only necessary to exert slight pressure thereupon in the proper direction, whereupon the fingers 28 will rece' -e in their respective poc ets against the tension of the several springs 29, whereupon inward movement of the free end of the fulcruming member 27 with respect to the receptacle 1 will be permitted. At the same time, the bearing pins 28 contacting with the inner sides of the walls of the receptacle l will serve to stabilize the swinging movement of the cover 5.

'With a view towards identifying the novelty presented by my improved hingeless cover, it may be stated that by reason of the novel formation of fulcrum member shown in connection with the Figures 1, 2 and 3, swinging movement of the cover with respect to its particular receptacle will be materially facilitated; the outer portions of the shank of the fulcrum member first engaging with an adjacent marginal portion of the open outer end of the receptacle and with continued swinging movement of the cover, riding over such marginal portion and that the cover will be arranged in a position at substantially right angles with respect to the. receptacle. During this swinging movement of the cover towardsor from the receptacle provided therewith, it is to be also noted that the oppositely disposed ears 6 will remain in constant contact with por tions of the adjacent walls of th receptacle '1, and in consequence, will serve to limit such swinging movement in a single vertical plane as respects the receptacle. Also, in this connection, it'is to be borne in mind that movement of the cover in a single vertical plane with respect to the receptacle equipped therewith is additionally effected by reason of the engagement of the opposite sides of the U-shaped shank portion 12 with portions of the inner sides of the receptacle walls. Because of this, it is obvious that the cover with its skirting flange will, at all times, be

maintained in a position to, with inward swinging movement, fully and positively engage over said open outer end of the receptacle under influence of the spring means arranged within such receptacle and connected to the cover through the medium of the inner end of the fulcruming member. Even when the cover is in itsfull open position, it willbe noted that portions of. the oppositely disposed ears 6 or 6 are in contact with portions of the walls of an equips ped receptacle and thus, lateral movement of the cover from its single vertical plane of, swinging or pivotal movement with respect to the receptacle will be avoided. In this connection, it will be noted that the contact of the opposite sides of the U-shaped shank portion 12 ofthe' contractile coiled spring is'clearly shown in the Figure 5.; it being noted in this respect that the opposite side portions of said shank have hearing upon certain portions of the inner surface of the receptacle, walls adjacent the rearward portion thereof. 7

Instead of relying upon the opposite sides of the U-shaped, shank 12 as means for additionally limiting the cover in its single vertical plane; path of movement with respect to an equipped receptacle, it will be borne in mind that that form of fulcruming member shown in the Figure 4, offers an effectual substitute. Herein, as shown in the Figure 6, the oppositely disposed bearing pins or fingers 18 have contact with the inner surfaces ofthe walls of the receptacle 1 at spaced points and in proximity to the rearward portion thereof. By reason of such contact of the bearing pins or fingers 18, the pivotal or swinging path of movement of the cover 6* will be in a single vertical plane with respectto the equipped receptacle and accordingly, said cover will be at all times maintained in a position in full vertical alignment with the open outer end of the equippedreceptacle so that with inward swinging movement of said cover, the same will fully and positively close said open outer end of such receptacle.

The form of devices shown in the Figures 7 and 8, also, afford means serving in addi-. tion to the downwardly o'r inwardly extended ears for limiting the path of swinging or pivotal movement of an equipped cover to a single vertical plane with respect to their particular receptacles, in order that full and complete engagement of the cover over the open outer end of such equipped receptacle will be ensured with inward swinging movement of the cover. Also, by reason of the expansible or yieldablearrangement of the yoke 24: with its hooked finger 23 and the spring. pressed bearing pins 28, it will be understood that when an equipped cover is moved to its full open position, these elements will serve. as means for engaging over certain marginal portions of'the open outer end of an equipped receptacle and thereby temporarily retain the cover in its full open posit-ion.

Manifestly, the various constructions set out are capable of considerable modification, and such modification as is within'the scope of my claims, I consider within the spirit of my invention.

I claim z" 1. In a receptacle cover, an arm upon the inner side thereof adjacent one portion of such cover, said arm extendinginto the receptacle and having one side thereof formed with a curved bearing surface adapted to be engaged with and moved over an adjacent marginal portion of said receptacle. 2. In a receptacle cover, an arm upon the lIlIlQfSldG thereof, said arm being curved throughout its length and extended into the receptacle, the curvature of said arm corre sponding to the arcuate path of a major portion of the movement of the cover and being adapted to be engaged with and moved over an adjacent marginalportion of said receptacle.

' 3. In a receptacle Jcover swingable toportions of the receptacle walls during swinging movement of such cover, certain of said lateral motion preventing means be ing formed with a curved bearing surface engageable with and movable over an adjacent marginal portion of the receptacle, the curvature of said bearing surface corresponding with the arc of a major portion of the movement of the cover.

4. In a receptacle cover swingable towards and from the mouth of a receptacle, said cover having a marginally disposed skirting flange engageable over portions of the outer surface of the receptacle walls, and an arm upon the under side of the cover and extending into the receptacle, one side of said arm being formed with a curved hearing surface engageable with and movable over an adjacent marginal portion of the re- 1 ceptacle, the curvature of said bearing surface corresponding to the arcuate path of a major portion of the movement of the cover.

5. In a receptacle cover swingable towards and from the mouth of a re eptacle, an angularly disposed marginal skirting flange upon the cover engageable over por tions of the outer surfaces of the receptacle Walls, transversely aligned depending ears extended from portions of said skirting flange and also engageable with portions of the receptacle wall, and an arm secured to the inner side of said cover having one side thereof formed with a curved bearing surface adapted to have transversal bearing engagement with an adjacent marginal portion of the receptacle and the inner end thereof engageable with the inner surfaces of those portions of the receptacle adjacent said extended ears.

6. In a receptacle cover having a margin ally disposed skirting flange thereon engagealole over the outer surfaces of the adjacent portions of the receptacle walls, guide ears extended from portions of said flange and arranged in opposed relationship, a fulcrummg arm secured to the lnner side of the cover directly between the ears and extending into the receptacle, portions of the receptacle walls being adapted to be received between said ears and portions of said fulcruming arm whereby to limit the path of travel of the cover in a single vertical plane during its movement from a closed to an opened position, one side of said fulcruming arm being formed with a curved bearing surface adapted to have transversal bearing engagement with and to be moved over an adjacent marginal portion of said receptacle.

7. In a receptacle cover swingable towards and from the mouth of a receptacle, said cover. having a marginally disposed skirting flange, a portion of said flange being cut away adjacent the point of fulcrum of-said cover to conform to the outer wall arm secured to th rearward eel and inner surface of said cover e: 5 into the receptacle formed with a o surface, engageable with and movable over an adjacent marginal portion of said receptacle. 7

8.111 a receptacle cover s rig-able to wards and from the mouth of receptacle, said cover ha ing a marginally disposed skirting flange, a portion of said ilanp'e being cut away adjace t the piont o: of the cover upon the receptacle to mately conform to the outer receptacle walls when in open position, guide cars extended from and beyond said skirting flan e and arranged in opposed positions adjec t the aid portion of said cover ad .pted to contactwith the outer surfaces of portions of the receptacle walls,

fulcrun'iing member secured to the rearward portion and inner surface of said cover directly between said ears, said ful cruming member having a relatively wide and longitudinally curved bearing surface engageable with and movable over an adjacent marginal portion of the receptacle, and guide means carriednpon the arm engageable with portions of the inner surfaces of said receptacle walls and adapted, to efiect longitudinal sliding contact with said receptacle walls during opening and closing of said cover. I

9. In a receptacle cover swingable towards and from the mouth of the receptacle, a fulcrum arm secured to the inner side and rearward portion of said cover having a relatively wide bearing surface, spring means arranged within and anchored to said receptacle, and a shank extending from one end of such spring means longitudinally of the receptacle and adjacent the rearward wall thereof, the upper portion of said shank having engagement with the free end of said fulcrum arm and adapted to have the opposite sides thereof contacting with adjacent portions of the inner sides of the receptacle walls at spaced points. V

10. In a receptacle cover having a marginally disposed skirting flange thereon engageable over the outer surfaces of the adjacent portions of the receptacle walls, guide ears extended from certain portions of said flange and arranged in opposed rerear lationship, a fulcruming arm secured to the inner side and rearward portion of the cover directly between said ears and extending from the cover, one side of said fulcrum arm being provided with a curved to the receptacle, an'

bearing surface movably contacting with portions of the receptacle wall, a coiled. spring arranged within and anchored toa portion of the receptacle, and a substantially U-shaped shank formed upon one end of said coiled spring and disposed longitudinally of and adjacent the rearward wall of such receptacle, the outer end of said U-shaped shank having connection with the adjacent end of the fulcrum arm and having contact upon portions of the inner sides of the re ceptacle walls at spaced points.

11. In a receptacle cover swingable toward and from the mouth of receptacle, said cover having a marginally disposed skirting flange, a portion of said flange being cut away adjacent the point of fulcrum of the cover upon the receptacle to approximately conform to the outer surface of the receptacle walls when in an open position, guide ears extended from and beyond said skirting flange and arranged in opposed positions adjacent the rearward portion of said cover, said guide ears adapted to effect longitudinal sliding contact with said outer surface of the receptacle walls, a fulcruming member secured to the rearward portion and inner surface of said cover directly between said ears, said fulcruming member having contacting means on its inner end to effect sliding contact with the inner surface of said receptacle wall, and said fulcruming member having a relatively wide longitudinally curved bearing surface en gageable with and movable over an adjacent marginal portion of the receptacle, said curved bearing surface being shaped to per-- mit longitudinal sliding contact between the inner wall of the receptacle and said contacting means, and between the outer wall of the receptacle and said guide ears, whereby said cover, during movement be tween open and. closed positions, will pivot around said guide ears and said contact ing means.

In witness whereof Ihave hereunto set my hand.

GUSTAV A. LINDSTEDT. 

